Transcervical approach for left ventricular assist device outflow graft: A proof-of-concept implantation study.
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ABSTRACT:
SUBMITTER: Sutherland FWH
PROVIDER: S-EPMC8311498 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:AimsOutflow graft obstruction is a poorly described complication following left ventricular assist device (LVAD) surgery. We sought to define the incidence of LVAD outflow graft obstruction and assess clinical outcomes with a percutaneous treatment strategy.Methods and resultsFrom January 2012 to October 2020, 322 patients with LVAD were managed at our institution. Patients with LVAD outflow graft obstruction were identified by cardiac computed tomography with angiography and invasive haemodynamic assessment and were subsequently treated with percutaneous intervention. Poisson regression was used to analyse time-dependent differences in the incidence of LVAD outflow graft obstruction. Kaplan-Meier analysis was used to estimate survival. Twenty patients (6.2%) developed haemodynamically significant LVAD outflow graft obstruction at a rate of 0.03 events per patient-year. Outflow graft obstruction presented a median of 33 (26-49) months after surgery. Patients presented with low estimated LVAD pump flow (95%), heart failure (90%), or both (85%), and 59% developed cardiogenic shock prior to intervention. The most common aetiology identified by cardiac computed tomography with angiography was external compression of the outflow graft (78%). On presentation, the median peak gradient in the outflow graft was 78 (64-100) mmHg. Outflow graft stenting was 100% successful with no in-hospital mortality, and it reduced the peak outflow graft gradient to 10 (2-17) mmHg (P < 0.001). Outflow graft stenting was durable with two patients (10%) requiring a repeat procedure over a median follow-up of 13 (7-20) months and did not impact survival.ConclusionsLeft ventricular assist device outflow graft obstruction is a relatively common and underappreciated cause of recurrent heart failure and LVAD dysfunction. Outflow graft stenting can be achieved with low morbidity and provides a long-term solution to this complication.
| S-EPMC8120379 | biostudies-literature
Project description: Not available
| S-EPMC8178814 | biostudies-literature
Project description: Not available
| S-EPMC7724393 | biostudies-literature
Project description:Over the past decade, left ventricular assist device (VAD) therapy has become more prevalent and increasingly safe. Severe complications, such as VAD pump thrombosis and outflow graft obstruction, are rare, yet still associated with high morbidity and mortality. Clinical presentation, VAD alarm and log files, laboratory analysis, and non-invasive cardiac imaging are crucial for establishing the correct diagnosis and determining clinical management. Early intervention is critical to prevent adverse cardiac remodelling or VAD pump failure.
| S-EPMC8006604 | biostudies-literature
Project description:Number of left ventricular assist device (LVAD) implantations increases every year, particularly LVADs for destination therapy (DT). Right ventricular failure (RVF) has been recognized as a serious complication of LVAD implantation. Reported incidence of RVF after LVAD ranges from 6% to 44%, varying mostly due to differences in RVF definition, different types of LVADs, and differences in patient populations included in studies. RVF complicating LVAD implantation is associated with worse postoperative mortality and morbidity including worse end-organ function, longer hospital length of stay, and lower success of bridge to transplant (BTT) therapy. Importance of RVF and its predictors in a setting of LVAD implantation has been recognized early, as evidenced by abundant number of attempts to identify independent risk factors and develop RVF predictor scores with a common purpose to improve patient selection and outcomes by recognizing potential need for biventricular assist device (BiVAD) at the time of LVAD implantation. The aim of this article is to review and summarize current body of knowledge on risk factors and prediction scores of RVF after LVAD implantation. Despite abundance of studies and proposed risk scores for RVF following LVAD, certain common limitations make their implementation and clinical usefulness questionable. Regardless, value of these studies lies in providing information on potential key predictors for RVF that can be taken into account in clinical decision making. Further investigation of current predictors and existing scores as well as new studies involving larger patient populations and more sophisticated statistical prediction models are necessary. Additionally, a short description of our empirical institutional approach to management of RVF following LVAD implantation is provided.
| S-EPMC4295071 | biostudies-literature
Project description:BACKGROUND:Continuous-flow left ventricular assist devices (LVADs) improve the hemodynamics of patients with advanced heart failure. However, the longitudinal trajectories of hemodynamics in patients after LVAD implantation remain unknown. The aim of this study was to investigate the trends of hemodynamic parameters following LVAD implantation. METHODS AND RESULTS:We retrospectively reviewed patients who underwent LVAD implantation between April 2014 and August 2018. We collected hemodynamic parameters from right heart catheterizations. Of 199 consecutive patients, we enrolled 150 patients who had both pre- and postimplant right heart catheterizations. They had 3 (2, 4) postimplant right heart catheterizations during a follow-up of 2.3 (1.3, 3.1) years. The mean age was 57 ± 13 years, and 102 patients (68%) were male. Following LVAD implantation, pulmonary arterial pressure and pulmonary capillary wedge pressure decreased, and cardiac index increased significantly, then remained unchanged throughout follow-up. Right atrial pressure decreased initially and then gradually increased to preimplant values. The pulmonary artery pulsatility index decreased initially and returned to preimplant values, then progressively decreased over longer follow-up. Subgroup analysis showed significant differences in the trajectories of the pulmonary artery pulsatility index based on gender. CONCLUSIONS:Despite improvement in left-side filling pressures and cardiac index following LVAD implantation, right atrial pressure increased and the pulmonary artery pulsatility index decreased over time, suggesting progressive right ventricular dysfunction.
| S-EPMC7259826 | biostudies-literature
Project description:A 70-year-old female heart failure patient could not be weaned from temporary left ventricular mechanical support with Impella CP (Abiomed Inc, Danvers, MA) after myocardial infarction; therefore, she underwent left ventricular assist device implantation (HeartMate 3; Abbott, Chicago, IL). After uneventful surgery, the patient had an early postoperative thrombus in the aortic root, and surgical thrombectomy on extracorporeal circulation was performed on the seventh postoperative day. The patient recovered well and presented in good condition with no neurologic symptoms at the 6-month follow-up visit. Surgical excision of aortic root thrombus is a feasible option even for frail patients with a left ventricular assist device.
| S-EPMC8636229 | biostudies-literature
Project description: Not available
| S-EPMC10689906 | biostudies-literature
Project description:BackgroundLeft ventricular assist device (LVAD) therapy is an established treatment for advanced heart failure with reduced ejection fraction. We evaluated the characteristics and clinical outcomes of patients implanted with an LVAD in the Netherlands.MethodsPatients implanted with an LVAD in the Netherlands between 2016 and 2020 were included in the analysis. Baseline characteristics entered into this registry, as well as clinical outcomes (death on device, heart transplantation) and major adverse events (device dysfunction, major bleeding, major infection and cerebrovascular event), were evaluated.ResultsA total of 430 patients were implanted with an LVAD; mean age was 55 ± 13 years and 27% were female. The initial device strategy was bridge to transplant (BTT) in 50%, destination therapy (DT) in 29% and bridge to decision (BTD) in the remaining 21%. After a follow-up of 17 months, 97 (23%) patients had died during active LVAD support. Survival was 83% at 1 year, 76% at 2 years and 54% at 5 years. Patients implanted with an LVAD as a BTT had better outcomes compared with DT at all time points (1 year 86% vs 72%, 2 years 83% vs 59% and 5 years 58% vs 33%). Major adverse events were frequently observed, most often major infection, major bleeding and cerebrovascular events (0.84, 0.33 and 0.09 per patient-year at risk, respectively) and were similar across device strategies. Patients supported with HeartMate 3 had a lower incidence of major adverse events.ConclusionsLong-term survival on durable LVAD support in the Netherlands is over 50% after 5 years. Major adverse events, especially infection and bleeding, are still frequently observed, but decreasing with the contemporary use of HeartMate 3 LVAD.
| S-EPMC10140239 | biostudies-literature
Project description:In patients with heart disease, the presence of a fragmented QRS complex (fQRS) on the surface electrocardiogram (ECG) is associated with an increased risk of mortality. We sought to evaluate the prevalence and location of fQRS before and after left ventricular assist device (LVAD) implantation and any associated risk of mortality.Twelve-lead surface ECGs before (pre-LVAD, n = 98) and after (early [< 7 days], n = 96, and late [≥ 30 days], n = 85, post-LVAD) LVAD implantation were evaluated for fQRS. Mortality data were gathered via review of medical records. The prevalence of fQRS increased significantly following LVAD implantation on early post-LVAD ECGs (31% to 47%, p < 0.01). Patients with fQRS in the anterior territory (precordial leads V1 to V5) on late post-LVAD ECGs had decreased survival or survival to cardiac transplantation over a 30 month follow-up period compared with patients who did not exhibit anterior fQRS (30% and 59%, respectively, p < 0.01).The prevalence of fragmented QRS on 12-lead ECG increases significantly in the anterior territory following LVAD implantation and is associated with decreased survival.
| S-EPMC5497182 | biostudies-other